Question

A student buys a guitar that is on sale for 15% off the regular price of $200. He also must pay an 8% sales tax. What is his total cost for the guitar?

ASNWER CHOICES

$176.80

$178.00

$183.60

$186.00

Answer 1

option c

Explanation:

a guitar 15% off means that the cost is now 85%

`100percent---200dollars\\85percent---x\:dollars\\\\x=(200*85)/(100)\\\\x=2*85\\\\x=170`

now the 8% of 170 is

`100\:percent---170\:dollars\\\\8\:percent---x\:dollars`

`x=(8*170)/(100)\\\\x=(8*17)/(10)\\\\x=13.6`

so the total cost is

170+13.6

183.6